185th Ave over Slough
FairMultnomah County, Oregon · .25 MI N of Sandy Blvd · Structure no. 51C38 000000000
- Built
- 1992
- 33 years old
- Condition
- Fair
- inspected July 2024
- Type
- Slab
- Prestressed Concrete
- Length
- 28 ft
- 1 main span
- Daily traffic
- 5,101
- 2020 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
185th Ave over Slough is a prestressed concrete slab carrying 185th Ave over Slough in Multnomah County, Oregon. It was built in 1992, so it is 33 years old, younger than the Oregon average of 49.9 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 5,101 vehicles a day, roughly 10% of them trucks, projected to reach 5,776 by 2025. The structure is 28 ft (8.5 m) long and 53 ft wide. If it were closed, the detour would be 3.7 mi (6 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 185th Ave over Slough built?
It was built in 1992, making it 33 years old in 2025.
What condition is 185th Ave over Slough in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2024.
How much traffic does 185th Ave over Slough carry?
About 5,101 vehicles per day (2020 count), of which roughly 10% are trucks.
How long is 185th Ave over Slough?
The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 53 ft wide.
Who owns 185th Ave over Slough?
It is owned by the City or Municipal Highway Agency.